Word Study
thirtieth
CIDE DICTIONARY
- Next in order after the twenty-ninth; the tenth after the twentieth; -- the ordinal of thirty; as, the thirtieth day of the month. [1913 Webster]
- Constituting or being one of thirty equal parts into which anything is divided. [1913 Webster]
thirtieth, n.
The quotient of a unit divided by thirty; one of thirty equal parts. [1913 Webster]
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